I have used Emsisoft on multiple computers for one year and a half now. Good program. Its detection rate is simply fantasti. Is GUI is beautiful and quite intuitive. It does have some FP's on a rather regular basis, but it does rescan on boot-up everything quarantained, so no harm done. Updates are regular, but sometimes quite large, which might be a problem if you are on a dial-up connection (which I am not). On start-up it takes Emsisoft AM some time to be fired up and I do get warning for Windows Security Centre sometimes. Fortunately, when you install the program it can be configured to start more quickly, though personally I have never bothered to do so. It used to be resource hungry, but its footprint has gtreatly improved in the recent past.
What can I say more, I love it